Gaya APA
L.G.Alexander, .
(1977).
Question & Answer Graded Oral Comprehension Exercises
(
Cet.1)
.
London:
Longman.
Gaya MLA
L.G.Alexander, .
"Question & Answer Graded Oral Comprehension Exercises".
Cet.1
London:
Longman,
1977.
Text.